540712 has 8 divisors (see below), whose sum is σ = 1013850. Its totient is φ = 270352.

The previous prime is 540703. The next prime is 540713. The reversal of 540712 is 217045.

It can be written as a sum of positive squares in only one way, i.e., 454276 + 86436 = 674^2 + 294^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 540712.

It is not an unprimeable number, because it can be changed into a prime (540713) by changing a digit.

540712 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33787 + ... + 33802.

2⁵⁴⁰⁷¹² is an apocalyptic number.

It is an amenable number.

540712 is a deficient number, since it is larger than the sum of its proper divisors (473138).

540712 is a wasteful number, since it uses less digits than its factorization.

540712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67595 (or 67591 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 540712 is about 735.3312178876. The cubic root of 540712 is about 81.4683028783.

Adding to 540712 its reverse (217045), we get a palindrome (757757).

The spelling of 540712 in words is "five hundred forty thousand, seven hundred twelve".